JP5821628B2 - Outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit including a heat exchanger made of aluminum or an aluminum alloy in an air conditioner.

  Conventionally, what is equipped with the heat exchanger which has the heat exchanger tube which consists of aluminum or aluminum alloy as an outdoor unit in an air conditioner is known. For example, in Patent Document 1, a pair of header collecting tubes, a plurality of flat heat transfer tubes made of aluminum or an aluminum alloy and connected between the pair of header collecting tubes, and a plurality of heat transfer tubes provided on each of the heat transfer tubes, respectively. An outdoor unit including a heat exchanger having fins is disclosed. Further, it is disclosed that the surface of each of the plurality of heat transfer tubes is exposed between the header collecting tube and the fin provided at the position closest to the header collecting tube in the heat transfer tube. Here, one of the pair of header collecting pipes distributes the refrigerant flowing into the header collecting pipe into a plurality of heat transfer pipes connected to the header collecting pipe and sends it to the other header collecting pipe side. And the other header collecting pipe collects the distributed refrigerant.

JP 2011-117628 A

  The outdoor unit including a heat exchanger having a heat transfer tube made of aluminum or an aluminum alloy as described in the above-mentioned document 1 may cause corrosion due to salt damage in the heat transfer tube depending on the use environment. Therefore, countermeasures are required. And since the part where the surface of the heat transfer tube is exposed is not exposed to fins because it is not provided with fins, it is speculated that the exposed portion of the heat transfer tube is particularly susceptible to corrosion due to salt damage. The

  Also, since the portion of the heat transfer tube where the surface is exposed has a lower resistance than the portion where the fin is provided, the air taken in from the outside of the outdoor unit does not pass through the fin and is near the exposed portion. It tends to flow to the back side of the heat exchanger through the bypass. Also from this, it is presumed that corrosion due to salt damage is likely to occur in the exposed portion. Furthermore, in this case, the heat exchange efficiency in the heat exchanger is reduced.

  However, the document 1 does not describe any countermeasure against salt damage to the heat transfer tube or measures against a decrease in heat exchange efficiency due to air bypassing an exposed portion of the heat transfer tube.

  The present invention has been made to solve the above-described problems, and in an outdoor unit including a heat exchanger having a heat transfer tube made of aluminum or an aluminum alloy, the occurrence of corrosion due to salt damage to the heat transfer tube is suppressed. And it aims at suppressing the fall of the heat exchange efficiency in a heat exchanger.

  As a means for solving the above-mentioned problems, the present invention provides an outdoor unit comprising a heat exchanger and a housing for housing the heat exchanger, wherein the heat exchanger includes a pair of header collecting pipes, aluminum Or a plurality of heat transfer tubes made of an aluminum alloy and connected between the header collecting tubes, and a plurality of fins provided on each of the heat transfer tubes, each of the plurality of heat transfer tubes, And an exposed portion whose surface is exposed between the heat transfer tube and a fin provided at a position closest to the header collecting tube, and the casing allows air to flow from the outside to the heat exchanger side. An outdoor unit further comprising a shielding member having an intake port for taking in, and having a shape that is provided between the intake port and the exposed portion and blocks airflow taken from the intake port from reaching the exposed portion. Offer That.

  The outdoor unit according to the present invention includes a shielding member having a shape that blocks the airflow taken from the air inlet from reaching the exposed portion between the air inlet of the housing and the exposed portion of the heat transfer tube. The airflow from the outside of the body through the intake port to the exposed portion is blocked by the shielding member, thereby suppressing the air taken in from the outside of the housing to the inside of the heat transfer tube. As a result, the occurrence of corrosion due to salt damage to the heat transfer tube can be suppressed, and furthermore, air taken in from the outside of the housing is suppressed from flowing bypassing the exposed portion, so that heat in the heat exchanger can be suppressed. A decrease in exchange efficiency can be suppressed.

  In this case, the shielding member is an upper surface covering portion having a shape capable of covering the upper surface of the exposed portion of the first heat transfer tube located at the uppermost position among the plurality of heat transfer tubes, and the most of the plurality of heat transfer tubes. A lower surface covering portion having a shape capable of covering the lower surface of the exposed portion of the second heat transfer tube located in the lower portion; and a connecting portion connecting the upper surface covering portion and the lower surface covering portion; Is disposed close to the upper surface of the exposed portion of the first heat transfer tube, the lower surface covering portion is disposed close to the lower surface of the exposed portion of the second heat transfer tube, and the connecting portion is the intake port in the exposed portion of each heat transfer tube It is preferable to be arranged close to the part facing the side.

  If it does in this way, the shielding member can further block the airflow which goes to the exposed part of each heat exchanger tube from an air inlet. Specifically, the shielding member has an upper surface covering portion disposed close to the upper surface of the exposed portion in the first heat transfer tube, a lower surface covering portion disposed close to the lower surface of the exposed portion in the second heat transfer tube, and the connecting portion is Since it is arranged close to the part facing the inlet side in the exposed part of each heat transfer tube, it can effectively block the air flow toward the exposed part of all the heat transfer tubes, thereby taking in from the outside to the inside of the housing The generated air is further suppressed from reaching the exposed portion of each heat transfer tube. As a result, the occurrence of corrosion due to salt damage to the heat transfer tube is further suppressed, and further, the deterioration of the heat exchange efficiency of the heat exchanger due to the air taken in from the outside of the housing flowing bypassing the exposed portion is further suppressed. Is done.

  Further, in this case, the shielding member has a shape that is connected to the connecting portion between the upper surface covering portion and the lower surface covering portion and can be inserted into each gap between the heat transfer tubes. It is preferable to further have a plurality of comb teeth, and each comb tooth is inserted into the gap.

  If it does in this way, each comb tooth covers at least one part of the part which faces the said comb tooth among the exposed parts of a pair of heat exchanger tube which pinches | interposes the said comb tooth from an up-down direction, By salt damage to a heat exchanger tube The occurrence of corrosion is further suppressed.

  In the present invention, it is preferable that each of the plurality of comb teeth has a shape that is long in one direction and whose tip is narrower than the side connected to the connecting portion.

  If it does in this way, it will become easy to insert the comb tooth of a shielding member between each heat exchanger tube.

  In the present invention, it is preferable that each of the upper surface covering portion, the lower surface covering portion, and the plurality of comb teeth has a longitudinal dimension substantially equal to or larger than a width dimension of the heat transfer tube.

  If it does in this way, since a shielding member can coat | cover more the exposed part of each heat exchanger tube, generation | occurrence | production of the corrosion by the salt damage to a heat exchanger tube is suppressed further.

  In the present invention, it is preferable that the header collecting pipe is made of aluminum or an aluminum alloy, and the shielding member has a shape that blocks airflow from the intake port toward the header collecting pipe.

  If it does in this way, generation | occurrence | production of the corrosion by salt damage to a header collecting pipe can be suppressed, making the material of a header collecting pipe and a heat exchanger tube common.

  As described above, according to the present invention, in an outdoor unit including a heat exchanger having a heat transfer tube made of aluminum or an aluminum alloy, the occurrence of corrosion due to salt damage to the heat transfer tube is suppressed, and the heat in the heat exchanger is A decrease in exchange efficiency can be suppressed.

It is a perspective view of the state where the case of the outdoor unit of one embodiment of the present invention was omitted. It is a perspective view which shows the outline | summary of the heat exchanger shown in FIG. It is a top view explaining the outline | summary of the outdoor unit of one Embodiment of this invention. It is the perspective view which expanded the principal part of the heat exchanger in the outdoor unit shown in FIG. It is the perspective view which expanded the principal part of the heat exchanger in the outdoor unit shown in FIG. It is the side view to which the principal part of the heat exchanger in the outdoor unit shown in FIG. 1 was expanded. It is a top view explaining the outline | summary of the modification of the outdoor unit of 1st embodiment. It is a top view explaining the outline | summary of the modification different from the modification of FIG.

  A preferred embodiment of the present invention will be described with reference to FIGS. FIG. 3 shows only the arrangement of the heat exchanger 10, which will be described later, the casing 20 without the top plate, and the blower 60. In FIG. 5, a plurality of fins 13 to be described later are omitted, and the details of the fins 13 in other figures except for FIG. 2 are omitted, and only the entire outline is shown. In addition, in FIG. 5, the state which partially fractured | ruptured the shielding member 30 mentioned later is shown for description.

  The outdoor unit in the present embodiment includes a heat exchanger 10, a casing (casing) 20 that houses the heat exchanger 10, and a shielding member 30. The outdoor unit further includes a protection member 40, a bottom plate 50 on which the heat exchanger 10 is placed, a blower 60, a partition plate 70, and a compressor and a control panel (not shown). In addition, the partition plate 70 partitions the ventilation chamber in which the air blower 60 is arrange | positioned, and the machine room in which a compressor, a control panel, etc. are arrange | positioned.

  As shown in FIG. 2, the heat exchanger 10 is in contact with a pair of header collecting pipes 11a and 11b, a plurality of heat transfer pipes 12 connected between the header collecting pipes 11a and 11b, and each heat transfer pipe 12. A plurality of fins 13 provided. The pair of header collecting tubes 11a, 11b, the plurality of heat transfer tubes 12, and the plurality of fins 13 are all made of aluminum or an aluminum alloy. The pair of header collecting pipes 11a and 11b and the plurality of fins 13 are not limited to those made of aluminum or aluminum alloy.

  The pair of header collecting pipes 11a and 11b includes a first header collecting pipe 11a arranged on one end side of the heat exchanger 10 and a second header collecting pipe 11b arranged on the other end of the heat exchanger 10, Each header collecting pipe 11a, 11b has a long shape in one direction (vertical direction in FIG. 1). The pair of header collecting pipes 11a and 11b are respectively placed on the bottom plate 50 so that the longitudinal direction thereof is vertical. The first header collecting pipe 11a distributes the refrigerant that has flowed into the first header collecting pipe 11a into the plurality of heat transfer pipes 12 connected to the first header collecting pipe 11a to the second header collecting pipe 11b side. send. The second header collecting pipe 11b collects the distributed refrigerant. In the present embodiment, the pair of header collecting pipes 11a and 11b are both cylindrical.

  The heat transfer tubes 12 are arranged so as to be lined up and down at predetermined intervals and are connected to the header collecting tubes 11a and 11b, and the refrigerant flows through the inside thereof. As shown in FIGS. 2 and 5, each heat transfer tube 12 has a flat shape in which the thickness, that is, the dimension in the arrangement direction is smaller than the dimension in the width direction. In the present embodiment, each heat transfer tube 12 is substantially L-shaped when viewed from above, and its long side portion is located on the back side (upper side in FIG. 3) and its short side portion is located on the side surface side (left side in FIG. 3). It is placed on the bottom plate 50 as shown. Each of the heat transfer tubes 12 is provided with a plurality of fins 13 arranged along the longitudinal direction thereof. As shown in FIGS. 2, 3, 5, and 6, each heat transfer tube 12 includes a first header collecting tube 11a and fins 13 provided at positions closest to the first header collecting tube 11a. And an exposed portion 12a whose surface is exposed between the second header collecting pipe 11b and the fin 13 provided at a position closest to the second header collecting pipe 11b. The surface area of each exposed portion 12a is larger than the surface area of each exposed portion between adjacent fins 13 in each heat transfer tube 12.

  Each fin 13 has a thin plate shape, and has a plurality of notches that can receive each heat transfer tube 12 so that the fin 13 can be inserted into each heat transfer tube 12 from the side thereof. Specifically, the shape of the notches of these fins 13 substantially matches the outer shape of the cross section of the heat transfer tube 12.

  The housing 20 has a box shape with an open bottom surface, and a lower end edge thereof is connected to a peripheral edge portion of the bottom plate 50. Thereby, all the heat exchangers 10, the blower 60, etc. are accommodated. The housing 20 has an intake port for taking in air from the outside toward the heat exchanger 10 side. The intake port includes a rear side intake port 21a and a side surface side intake port 21b. The back side air inlet 21a has a shape capable of supplying outside air to the long side portion of each heat transfer tube 12 and the fins 13 provided in this portion. The side air inlet 21b has a shape capable of supplying outside air to the short side portion of each heat transfer tube 12 and the fin 13 provided in this portion. For example, as each intake port 21a, 21b, what consists of a some slit and a grid | lattice-like opening are mentioned.

  The shielding member 30 has a shape that blocks the airflow taken from the intake ports 21a and 21b from reaching the header collecting pipes 11a and 11b and the exposed portions 12a. The shielding member 30 is provided between the back side intake port 21a and the first header collecting pipe 11a, and between the side surface side intake port 21b and the second header collecting pipe 11b. More preferably, each shielding member 30 is disposed close to each header collecting pipe 11a, 11b.

  Specifically, the shielding member 30 has a surrounding portion 31 having a shape that partially surrounds the header collecting pipes 11a and 11b over the entire area of the header collecting pipes 11a and 11b in the longitudinal direction. As shown in FIGS. 1, 4, and 5, the surrounding portion 31 includes a first plane portion 32 and a second plane portion 33. The first plane portion 32 passes between the fins 13 provided closest to the header collecting pipes 11a and 11b and the header collecting pipes 11a and 11b among the planes parallel to the longitudinal direction of the header collecting pipes 11a and 11b. Includes a first plane. The second flat portion 33 is connected to the first flat portion 32 and passes between the header collecting pipes 11a and 11b and the housing 20 among the planes parallel to the longitudinal direction of the header collecting pipes 11a and 11b. Includes a second plane. In the present embodiment, the first plane part 32 and the second plane part 33 are connected so as to be orthogonal to each other, but the angle formed by them is not limited to 90 degrees. The shielding member 30 has a first plane parallel to a plane orthogonal to the direction in which the heat transfer tubes 12 extend from the header collecting pipes 11a and 11b, and a second plane extending from the header collecting pipes 11a and 11b to the heat transfer tubes 12. The first flat portion 32 is located between the header collecting pipes 11a and 11b and the fins 13, and the second flat portion 33 is arranged in the header collecting pipes 11a and 11b. If it is located between the housing 20 and the housing 20, the shielding member 30 may be arranged so as to be rotated slightly around the axis of the header collecting pipes 11a and 11b. In the present embodiment, the example in which the surrounding portion 31 includes the first planar portion 32 and the second planar portion 33 has been described. However, the surrounding portion 31 has a shape that partially surrounds the header collecting pipes 11a and 11b. Therefore, the shape is not limited to the shape having the flat portion, and may be a curved shape, for example.

  As shown in FIG. 5, the first plane portion 32 includes an upper surface covering portion 34, a lower surface covering portion (not shown), a connecting portion 35, and a comb tooth portion. The upper surface covering portion 34 has a shape capable of covering at least a part of the upper surface of the exposed portion 12 a in the first heat transfer tube located at the uppermost position among the plurality of heat transfer tubes 12. And this upper surface coating | coated part 34 is arrange | positioned adjacent to the upper surface of the exposed part 12a in a 1st heat exchanger tube. The lower surface covering portion has a shape capable of covering at least a part of the lower surface of the exposed portion 12a in the second heat transfer tube located at the lowermost position among the plurality of heat transfer tubes 12. And this lower surface coating | coated part is arrange | positioned adjacent to the lower surface of the exposed part 12a in a 2nd heat exchanger tube. The connecting portion 35 connects the upper surface covering portion 34 and the lower surface covering portion, and is disposed close to the portion of the exposed portion 12a of each heat transfer tube 12 facing the intake port. The comb tooth portion includes a plurality of comb teeth 36 and is provided integrally with the connecting portion 35 so as to extend from the connecting portion 35. Each comb tooth 36 is provided between the upper surface covering portion 34 and the lower surface covering portion and at a position where it can be inserted into each gap between the heat transfer tubes 12. Each comb tooth 36 has a shape capable of covering at least a part of a portion facing the comb tooth 36 in the exposed portion 12a of the pair of heat transfer tubes 12 sandwiching the comb tooth 36 from above and below. And this comb-tooth part is inserted in the clearance gap between each heat exchanger tube 12. FIG. Each comb tooth 36 has a tapered shape that is long in one direction and has a tip that is narrower than the side connected to the connecting portion 35.

  Here, each of the upper surface covering portion 34, the lower surface covering portion, and the comb teeth portion of the shielding member 30 disposed on the second header collecting tube 11b side has a longitudinal dimension substantially the same as the width dimension of each heat transfer tube 12. Or it is set larger. Thereby, the upper surface covering portion 34 can cover all the upper surface of the exposed portion 12a in the first heat transfer tube, and the lower surface covering portion can cover all the lower surface of the exposed portion 12a in the second heat transfer tube, The comb tooth portion can cover all the portions facing the comb teeth 36 in the exposed portion 12 a of the heat transfer tube 12. In addition, the 1st plane part 32 is the upper surface of the exposed part 12a in a 1st heat exchanger tube, the lower surface of the exposed part 12a in a 2nd heat exchanger tube, and the part which faced the inlet-port side in the exposed part 12a of each heat exchanger tube 12. Is covered, substantially the entire area of each exposed portion 12a can be covered, and thus the comb tooth portion may be omitted.

  The 2nd plane part 33 is arrange | positioned so that the side which faces the housing | casing 20 in each header collecting pipe 11a, 11b may be coat | covered. The second flat surface portion 33 has an attachment portion 37 that can be attached to a fixing portion (not shown) provided on the housing 20, the bottom plate 50, or the partition plate 70. The attachment portion 37 may be provided on the first plane portion 32.

  The protection member 40 protects the downstream portion of the air flow in the first header collecting pipe 11a. The protection member 40 may be omitted or provided on the second header collecting pipe 11b side. The protection member 40 has a shape that forms a pair with the shielding member 30 and includes, for example, a protection portion 41 having a shape that partially surrounds the first header collecting pipe 11a. The protection part 41 is a part which makes a pair with the surrounding part 31, and has a shape surrounding a part other than the part surrounded by the surrounding part 31 on the outer peripheral surface of the header collecting pipe 11a. Then, the upper surface covering portion 34 and the portion of the protection portion 41 that is paired with the upper surface covering portion 34 cover the entire upper surface of the exposed portion 12a in the first heat transfer tube, and the lower surface covering portion and the lower surface covering portion in the protection portion 41 The exposed portion 12a of the heat transfer tube 12 is covered by the paired portions so as to cover the entire lower surface of the exposed portion 12a of the second heat transfer tube, and the comb teeth portion and the portion of the protection portion 41 that are paired with the comb teeth portion. All the parts facing the comb teeth 36 can be covered. In addition, the shielding member 30 and the protection member 40 are not separable structures, and may be integrated.

  As described above, in the outdoor unit of the present embodiment, the airflow taken from each intake port 21a, 21b is exposed between each intake port 21a, 21b in the housing 20 and the exposed portion 12a in the heat transfer tube 12. Since the shielding member 30 having a shape that blocks the arrival at 12a is provided, even if the blower 60 operates and outside air is taken in from the intake ports 21a and 21b of the housing 20, the air passes through the intake ports 21a and 21b. The airflow toward the exposed portion 12a is blocked by the shielding member 30. Therefore, it is suppressed that the air taken in from the outside to the inside of the housing 20 reaches the exposed portion 12a of each heat transfer tube 12. As a result, the occurrence of corrosion due to salt damage to the heat transfer tube 12 can be suppressed, and furthermore, air taken in from the outside of the housing 20 is suppressed from flowing bypassing the exposed portion 12a, so heat exchange A decrease in heat exchange efficiency in the vessel 10 can be suppressed.

  In the present embodiment, the shielding member 30 has its upper surface covering portion 34 disposed close to the upper surface of the exposed portion 12a of the first heat transfer tube, and its lower surface covering portion adjacent to the lower surface of the exposed portion 12a of the second heat transfer tube. Since the connection portion 35 is disposed close to the portion facing the inlet side in the exposed portion 12a of each heat transfer tube 12, the air flow toward the exposed portions 12a of all the heat transfer tubes 12 can be effectively blocked. Thus, the air taken in from the outside of the housing 20 to the inside is further suppressed from reaching the exposed portions 12 a of the heat transfer tubes 12.

  Further, in the present embodiment, the shielding member 30 has a plurality of comb teeth 36 between the upper surface covering portion 34 and the lower surface covering portion, and each comb tooth 36 is inserted into each gap between the heat transfer tubes 12. ing. Each comb tooth 36 covers at least a part of the exposed portion 12a of the pair of heat transfer tubes 12 sandwiching the comb teeth 36 from above and below, facing the comb teeth 36, and therefore, due to salt damage to the heat transfer tubes 12 The occurrence of corrosion is further suppressed.

  Moreover, since the outdoor unit of this embodiment has the shielding member 30 between the inlet port in the housing | casing 20 and each header collecting pipe 11a, 11b, the air blower 60 act | operates and external air is supplied from each inlet port of the housing | casing 20. Is taken in, the airflow toward each header collecting pipe 11a, 11b through each intake port is blocked by the shielding member 30. Therefore, it is possible to suppress the occurrence of corrosion due to salt damage in each header collecting pipe 11a, 11b.

  Further, in the present embodiment, the surrounding portion 31 of the shielding member 30 is connected to the header collecting pipes 11a and 11b at positions close to the header collecting pipes 11a and 11b over the entire area in the longitudinal direction of the header collecting pipes 11a and 11b. Since the periphery is partially surrounded so as to block the airflow that goes to it, the air taken from the outside to the inside of the housing 20 is further suppressed from reaching the header collecting pipes 11a and 11b.

  Furthermore, in this embodiment, the shielding member 30 has comb-tooth portions that can be inserted into the gaps between the heat transfer tubes 12, and the comb-tooth portions are inserted into the gaps. Therefore, since the air flow toward the side where the heat transfer pipe 12 is connected in each header collecting pipe 11a, 11b is blocked by the comb tooth portion, the occurrence of corrosion due to salt damage in each header collecting pipe 11a, 11b is further suppressed. Is done.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above-described embodiment, each shielding member 30 is shown in an example in which the surrounding portion 31 is disposed in proximity to each header collecting pipe 11a, 11b. However, as the shielding member 30, the air inlets 21a, 21b are used. A shape having a plane orthogonal to a straight line connecting the end portion on the header collecting pipe side at each intake port and the exposed portion 12a suffices as long as the taken airflow can be blocked from reaching each exposed portion 12a. In addition, it may be disposed between the end portion on the header collecting pipe side at each intake port and the exposed portion 12a.

  Moreover, in the said embodiment, although the shielding member 30 showed about the example which has the surrounding part 31 containing the 1st plane part 32 and the 2nd plane part 33, the 2nd plane part 33 in this surrounding part 31 or, Either one of the first plane portions 32 can be omitted. Specifically, as shown in FIG. 7, the exposed portion 12a on the first header collecting pipe 11a side has a side-side intake port 21b that is closer to the side of the first header collecting tube 11a side than the back side intake port 21a. In the case where it is located closer to the side surface on the side where it is not provided (the right side in FIG. 7), the shielding member 30 ′ having only the linear first plane portion 32 can be obtained. If the first shielding member 30 'is arranged so that the first flat surface portion 32 covers each exposed portion 12a, the same effect as in the above embodiment can be obtained. In this case, the end of the shielding member 30 ′ on the side of the housing 20 is arranged so close that there is almost no gap between it and the housing 20. The same applies to the shielding member 30 'on the second header collecting pipe 11b side. Alternatively, as shown in FIG. 8, the shielding member 30 ″ having only the linear second plane portion 33 can be formed. If the second flat surface portion 33 is arranged so as to cover the side of the exposed portion 12a facing the housing 20, the same effect as that of the above embodiment can be obtained. In this case, the end of the shielding member 30 ″ on the housing 20 side is arranged as close as possible so that there is almost no gap between the shielding member 30 ″ and the housing 20.

  Further, in the above embodiment, the shielding member 30 has been described with respect to an example in which the upper end of the shielding member 30 is substantially the same position as the upper ends of the header collecting pipes 11a and 11b, but the upper end reaches the inside of the top plate of the housing 20. It may be extended and fixed to the inside of the top plate.

DESCRIPTION OF SYMBOLS 10 Heat exchanger 11a 1st header collecting pipe 11b 2nd header collecting pipe 12 Heat transfer tube 13 Fin 20 Housing | casing 21a Back side inlet 21b Side side inlet 30 Shielding member 31 Surrounding part 40, 40 '1st shielding member 41 1st DESCRIPTION OF SYMBOLS 1 Surrounding part 42 1st plane part 43 2nd plane part 44 Upper surface coating | coated part 45 Connection part 46 Comb-tooth 47 Attaching part 50 2nd shielding member 51 2nd surrounding part 60 Bottom plate 70 Blower 80 Partition plate

Claims (5)

An outdoor unit comprising a heat exchanger (10) and a housing (20) for housing the heat exchanger (10),
The heat exchanger (10) includes a pair of header collecting tubes (11a, 11b) and a plurality of heat transfer tubes (12) made of aluminum or aluminum alloy and connected between the header collecting tubes (11a, 11b), A plurality of fins (13) provided in each of the heat transfer tubes (12),
Each of the plurality of heat transfer tubes (12) includes a fin (13) provided at a position closest to the header collecting tube (11a, 11b) and the header collecting tube (11a, 11b) in the heat transfer tube (12). And an exposed portion (12a) whose surface is exposed between
The housing (20) has intake ports (21a, 21b) for taking in air from the outside to the heat exchanger (10) side,
A shape that is provided between the intake port (21a, 21b) and the exposed portion (12a) and blocks airflow taken from the intake port (21a, 21b) from reaching the exposed portion (12a). further comprising shielding members (30) having,
The shielding member (30) has an upper surface covering portion (34) having a shape capable of covering the upper surface of the exposed portion (12a) in the first heat transfer tube located at the uppermost position among the plurality of heat transfer tubes (12), The lower surface covering portion having a shape capable of covering the lower surface of the exposed portion (12a) in the second heat transfer tube located at the lowest position among the plurality of heat transfer tubes (12), the upper surface covering portion (34), and the lower surface A connecting portion (35) for connecting the covering portion,
The upper surface covering portion (34) is disposed close to the upper surface of the exposed portion (12a) in the first heat transfer tube, and the lower surface covering portion is disposed close to the lower surface of the exposed portion (12a) in the second heat transfer tube, The connecting portion (35) is disposed close to a portion of the exposed portion (12a) of each heat transfer tube (12) facing the inlet (21a, 21b) side,
The shielding member (30) is connected to the connecting portion (35) between the upper surface covering portion (34) and the lower surface covering portion, and each gap between the heat transfer tubes (12). The outdoor unit further including a plurality of comb teeth (36) having a shape that can be inserted into each of the plurality of comb teeth (36) . The outdoor unit according to claim 1 ,
Each of the plurality of comb teeth (36) is an outdoor unit that is long in one direction and has a shape that is narrower at the tip than at the side connected to the connecting portion (35). The outdoor unit according to claim 1 or 2 ,
Each of the upper surface covering portion (35), the lower surface covering portion, and the plurality of comb teeth (36) is an outdoor unit having a longitudinal dimension substantially equal to or larger than a width dimension of the heat transfer tube (12). The outdoor unit according to any one of claims 1 to 3 ,
The header collecting pipe (11a, 11b) is made of aluminum or an aluminum alloy,
The said shielding member (30) is an outdoor unit which has a shape which also shields the airflow which goes to the said header collection pipe | tube (11a, 11b) from the said inlet (21a, 21b). The outdoor unit according to any one of claims 1 to 4 ,
The said shielding member (30) is an outdoor unit which has an attachment part (37) which can be attached to the fixing | fixed part provided in the said housing | casing (20).

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